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FPGA implementation of spectral subtraction for in-car speech enhancement and recognition

Whittington, Jim , Deo, Kapeel , Kleinschmidt, Tristan, & Mason, Michael W. (2008) FPGA implementation of spectral subtraction for in-car speech enhancement and recognition. In International Conference on Signal Processing and Communication Systems 2008, 15-17 December 2008, Gold Coast, Australia.

Abstract

The use of speech recognition in noisy environments requires the use of speech enhancement algorithms in order to improve recognition performance. Deploying these enhancement techniques requires significant engineering to ensure algorithms are realisable in electronic hardware. This paper describes the design decisions and process to port the popular spectral subtraction algorithm to a Virtex-4 field-programmable gate array (FPGA) device. Resource analysis shows the final design uses only 13% of the total available FPGA resources. Waveforms and spectrograms presented support the validity of the proposed FPGA design.

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ID Code: 17512
Item Type: Conference Paper
Keywords: Field programmable gate arrays, Speech enhancement, Road vehicles
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Signal Processing (090609)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Circuits and Systems (090601)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Institutes > Information Security Institute
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 2008 (please consult author)
Deposited On: 04 Feb 2009 13:43
Last Modified: 29 Feb 2012 23:48

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